The invention modifies and converts neutral dye molecules (D) to ionic salts (D-A.sup.+ X.sup.- or DA.sup.- X.sup.+), and employs them as emitting or charge transport layers in organic light emitting diodes (OLED's). This is achieved by attaching ionizable substituents (A) on the dye
An FET structure in accordance with the invention employs an organic-inorganic hybrid material as the semiconducting channel between source and drain electrodes of the device. The organic-inorganic material combines the advantages of an inorganic, crystalline solid with those of an o
